Pump



of the same or directly to the Patented Jan. 15, 1935 UNITED STATE 5 PUMP Clarence E. McGregor, Spring Lake,

Mich, as-

signor to Bennett. Pumps Corporation,1Muskegon, Mich.,.a corporation of Michigan ApplicationMay 29, 1929, Serial ism-366,841

1 Claim. (01. 230-475) This invention relates to aliquid pump and one which in practice is adapted to be used in pumping gasoline from a main supply tank to either a receptacle holding a measured quantity fuel holding tank of a motor vehicle.

It is a primary object and purpose of the present invention to produce a very compact, economically constructed and serviceable pump of the double action type, that is, one which continuously pumps liquid irrespective of the direction of stroke of the piston, and. particularly to provide a pump of this kind wherein all of the valves used therein may be located at the upper end of the pump body between it and a covering head or cap therefor. This makes it possible to greatlyreduce the machine work re quired for finishing the castings and at the same time all of the valves used are quickly assembled and are all accessible for examination, repair or replacement, should it be needed, on merely removing the covering head of the pump.

The invention and the construction embody ing the same are fully described in the following description, taken in connection with the accompanying drawings, in which,

Fig. l is a side elevation of the pump made in accordance with my invention.

Fig. 2 is a central vertical section therethrough.

Fig. 3 is a developed vertical section on the plane of the curved line 3-3 of Fig. 4.

Fig. 4 is a horizontal section on the plane of line 4-4, of Fig. 2'loolzing in a downward direction, and V Fig. 5 is an enlarged detail in horizontal section illustrating the manner in which the "piston is operated byan outside pump handle or lever.

Like reference characters refer to like'parts in the different figures in the drawings.

In the construction illustrated there is a lower pump body in the form of an integral casting, including a vertical .cylinder 1 which has a horizontal bottom 2. der 1 is an integral vertical cylinder 4.0 2 small diameter which is enlarged laterally at its upper portion to form. an inlet chamber, as indicated at 5, the upper end of the cylinder 4 and the en-. largement 5 being closed except for vertical openings 6 and 7 through the metal forming the upper closure, (see Fig. 3) in which openings gravity valves 8 and 9, respectively, are located. The valves, as shown, are formed with outwardly extending annular flanges adjacent their upper ends, which rest on the upper end of the pump At one side of the cylin body casting, the major portions of the valves extending into. the openings Band 7., An inlet pipe 10 which may lead to the main supply tank holding the liquid to be pumped is threaded into the lower end of cylinder 4. .5.

Alongside the cylinder 4 is a second cylindricalv section 11 cast integral with the body of the pump and separated from the vertical passage through the cylinder 4 by a wall 12, therebyproviding a vertical passage 11a open at its upper. 10 end to the'upper side of the pump body casting, An opening 13 is made through. the wall of the main cylinder at'the lower endv thereof whereby the, interior of the cylinder 1 and the passage 11a are connected at their lower ends.

At the opposite side of tical cylinder 14= having a closed lowerendand an opening 15 at its upper end' into which a valve 16 is inserted. The valve is identical in construction with thevalves 8 and 9'previously described;

Anjopening 17 is madein the wall'of the cylinder 1 to the interior of the cylindrical section '14 connectingthe'same, at their lowerends. 1 l

"Adjacent the upper end portion the cylindrical section. 1 4' is 'a laterally offset section 18 into 5 which. a ,projecting'ledge 19 of metal extends from the upper end of the cylindricalsection-14:

In the ledge'19 a vertical opening 20 is made in whichavalve 21,, similar-to all of the other valves described, is received. The'lateral section 1 '8 is v hollow and has a passage 18a therethrough, the upper end of the passage 18a being free andunob structed, the same as is the vertical passage 11a previously described.

It is evident from lower pump body casting, which has been described, has a horizontal upper side which may be readily planed andmachined and. that the only other machinev work necessary to bore the cylinder landgpossibly, finish the openings 6, 7, 40 15 and 20 to some degree for the reception of the valves; and that all of the valves are assembled by merely inserting the same in their respective. openings, that they normally close the openings in which they are placed bygravity, and areall readily accessible at theupper end of thetmain body casting of the-pump.

The covering head, or cap of the pump is adapt ed to be located over the body casting described;

It comprises a flat upper side or top'22 from which flanges 23 dependat, the outer edges so to coverthemaincylinder. 1 and the various parts i, 11, 14, 15 and 18 of the body casting. A web 24 is cast integral with the head depending therefrom and is applied to the body casting as 1.5. the cylinder 1 ma ,ver-

this construction that the shown in Figs. 3 and 4, defining a chamber 25 underneath the head over the upper end of the vertical passage 11a and over the valve 8, and another chamber 26 over the valve 9 which is in free communication with the upper end of the cylinder 1. Likewise a second web 27 extends downwardly from the head, as shown in Figs. 3 and 4, to define an enclosing chamber 28 underneath the head over the valves 16 and 21, while the other chamber 29 over the upper open end of the passage 18a communicates freely with the upper end of the cylinder 1.

The covering head at its upper side is also provided with depending stops 30 shown which are disposed directly over the various valves to limit the extent of their upper movement. And outlet pipe 31 has a threaded connection with the head or of the pump, communicating with the chamber 28 described.

The covering head at its upper side is formed with a hollow upwardly extending housing 32 (Figs. 1 and 2) from one side of which (Fig. 5) an integral horizontal sleeve 33 extends. A rock shaft 34 is mounted transversely of the housing and extends through said sleeve, being properly hushed and packed to prevent leakage, and at its outer end has a pump handle or lever 35 secured by means of which the shaft may be rocked back and forth. Within the housing 32 an arm 36 is permanently secured to the shaft which is preferably formed to almost semi-circular cross section within the housing 33 as shown in Fig. 2, at 34a a staple 37 connected to the arm 36 passing around such flattened portion 34a of the rock shaft. The arm 36 extends over the upper portion of the cylinder 1 and has a connecting rod 38 pivotally secured thereto and suspended therefrom which, at its lower end, has a pivotal connection to a block 39 from which a stud 4O extendsdownwardly through the web 41 of a piston 42 mounted for reciprocation in the cylinder 1. The web 40 is concaved at its otherside, or dish-shaped as shown, so that should any water settle from the gasoline at the upper side of the piston it is collected above the concaved web and its freezing and expansion will be productive of no damage due to the shapeof the web 41.

In operation the handle or lever 35 is moved back and forth to rock the shaft 34 with a resultant upward and downward reciprocation of the piston 42. On the upward movement of the piston the liquid is drawn through the inlet pipe 10 into the chamber enclosed by the cylinder 4, comes against the valve 8 and lifts it, enters the chamber 25 and passes therefrom through the pipe 11a and the opening 13 at the lower end thereof into the lower part of cylinder 1. At the same time liquid above the piston is forced into the chamber 26, holding the valve 9 closed and also into the chamber 29 and thence through passage 18a. to the valve 21 which is lifted, the liquid going into the chamber 28 and holding the valve 16 closed, and passing from chamber 28 through the outlet pipe, 31.

On the downward movement of the piston, the liquid beneath the piston is forced through the opening at 17 into the chamber of. cylinder 14, thence upwardly against the valve 16, which is lifted, passing by the same into the chamber 28 and out through the outlet pipe 31. The valve 21 is held closed by pressure of the liquid, gravity and the suction which occurs on the downward movement of the piston. At the same time liquid is drawn through the inlet pipe 10, lifts the valve 7 which it passes into the chamber 26 and. therefrom into the upper end of the cylinder 1 above the piston. The valve 8 is held closed by gravity and by pressure of liquid through the opening 13 into the passage 11a and into the chamber 25 above said valve 8.

It is accordingly evident that on operating the pump by merely moving the lever 25 back and forth, a continuous pumping of liquid takes place on both the up and down strokes of the piston, and that liquid is drawn into the pump and expelled from the pump with both movements of the piston. And at the same time the valves 8, 9, 16 and 21 are located in a single horizontal plane at the upper end of the pump body and between it and the covering head, securing all of the advantages of such location in the Way of economy of manufacture, ease of assembling and accessibility to the valves in case of repair or replacement thereof.

The construction defined is a very practical and serviceable pump for the purpose which it is to be used, namely, pumping liquids. The advantages of the construction are self-evident. The claim appended hereto defines the invention which is to be considered comprehensive of all forms of structure coming Within the scope of said claim.

I claim:

A pump comprising a lower pump body having a vertical cylinder and vertical passages at the sides of the cylinder, an inlet pipe leading into the lower end of one of said passages at a side of the cylinder, said passage having two spaced apart outlet openings at its upper end, gravity actuated valves in said openings, a second of said passages alongside the first passage having an open upper end and an opening at its lower end connected with said cylinder, a third vertical passage having an opening at its upper end and an opening at its lower end connecting the same with said cylinder, a valve in the upper end of said third passage, a chamber disposed at the upper end and at one side of said third vertical passage and separated therefrom, having two spaced apart openings at the upper side thereof, a valve in one of said openings spaced a short distance from the third mentioned valve, a covering head over said cylinder, chamber and passages, webs extending downwardly from the head defining an enclosing chamber in the head over the upper end of the first passage, 2. second chamber in the head over the other valve at the upper end of the first passage and in communication with the upper end of the cylinder, a third enclosing chamber in the head over the valve at the upper end of the third passage and over the valve associated with the chamber in said body and a fourth chamber in the head over the upper end of the other of said openings in said chamber in the body and joining with the upper end of the cylinder, an outlet pipe connected with the head and commimicating with the third chamber in said head, a piston mounted in said cylinder and means for reciprocating said piston in the cylinder.

CLARENCE E. MCGREGOR. 

